notcurses/include/ncpp/Utilities.hh

#ifndef __NCPP_UTILITIES_HH
#define __NCPP_UTILITIES_HH

#include <notcurses/notcurses.h>

#include "_helpers.hh"

namespace ncpp
{
	class Plane;

	class NCPP_API_EXPORT Utilities
	{
	public:
		static ncplane* to_ncplane (const Plane *plane) noexcept;

		static ncplane* to_ncplane (const Plane &plane) noexcept
		{
			return to_ncplane (&plane);
		}
	};
}
#endif
Correctly cast `ncpp::Plane` to `ncplane` Fixes: https://github.com/dankamongmen/notcurses/issues/616 SIGSEGV was caused by an invalid cast. Short explanation: PEBKAC Long explanation: `Selector.hh`, `Plot.hh` and `MultiSelector.hh` did not include `Plane.hh`, they merely declared `class Plane;` because inclusion of `Plane.hh` would cause circular dependencies to appear and the compiler would be unhappy. On top of that, yours truly wrenched the compiler's hands and caused it to believe that a pointer to `Plane` is really a pointer to `ncplane` which was quite a silly thing to do as the compiler, not having included `Plane.hh` and thus not knowing full definition of the type, wasn't able to look up the type cast operator in `Plane`. Don't abuse `reinterpret_cast`, kids! 2020-05-22 20:11:59 +00:00			`#ifndef __NCPP_UTILITIES_HH`
			`#define __NCPP_UTILITIES_HH`

			`#include <notcurses/notcurses.h>`

			`#include "_helpers.hh"`

			`namespace ncpp`
			`{`
			`class Plane;`

			`class NCPP_API_EXPORT Utilities`
			`{`
			`public:`
			`static ncplane* to_ncplane (const Plane *plane) noexcept;`

			`static ncplane* to_ncplane (const Plane &plane) noexcept`
			`{`
			`return to_ncplane (&plane);`
			`}`
			`};`
			`}`
			`#endif`